You can now combine two-handed weapons to transfer some of the attributes of
one item to another.

Greatswords, polearms, orbs,
spellbooks, staffs, and bows are all two-handed weapons that can now be
combined. Combining weapons transfers some of the Secondary weapon’s stats,
options, and all manastone slots to the Primary weapon. The Secondary weapon is
destroyed in the combining process and must be of equal or lower level than the
Primary weapon. The combining process can also be undone, restoring the primary
weapon to its original state.

Facts about Armsfusion and
Armsbreaking: Both
Primary and Secondary must be the same weapon type After
fusion, weapons cannot be sold, traded, or stored The
Secondary weapon must be equal or lower level than the Primary The
Secondary weapon is destroyed and lost forever The
fused weapon can be broken to recover the Primary weapon to its original state.
This is called Armsbreaking.

What carries over?

10%
of the Attack (Melee or Magic) value of the Secondary weapon Any
stat bonus from the secondary weapon that the primary does not have
already Any
stat bonus from the Secondary weapon that is better than what the primary
already has Manastone
sockets from BOTH weapons Socketed
Manastones from BOTH weapons The
Godstone from the Primary weapon is kept. If the Secondary weapon has a Godstone
it will be destroyed Maintains
the appearance of the Primary Weapon